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Re: [lammps-users] How to oscillate a wall while thermostatting
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Re: [lammps-users] How to oscillate a wall while thermostatting


From: Axel Kohlmeyer <akohlmey@...24...>
Date: Wed, 1 Nov 2017 05:13:21 -0400

On Wed, Nov 1, 2017 at 4:35 AM, saeed alborzi <alborzi.saeed6@...24...> wrote:
>
> Hello
>
> My problem is to find a way to add some time-dependent value to wall atoms'
> velocity while their temperature is controlled by another fix such as fix
> nvt or temp/berendsen+fix nve.
>
> In fact I want to have an oscillating heat source wall.
>
> I tried "velocity set" command with "sum yes" keyword but the error message
> says that you can not add a time-dependent value. On the other hand I can
> not use "fix move" command because I want to control the temperature with
> another appropriate fix command.

what frequency and amplitude of oscillation of the wall are we talking
about here?

axel.

>
> Any help would be appreciated.
>
> Thanks
>
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-- 
Dr. Axel Kohlmeyer  akohlmey@...24...  http://goo.gl/1wk0
College of Science & Technology, Temple University, Philadelphia PA, USA
International Centre for Theoretical Physics, Trieste. Italy.